Leakage current monitoring and outdoor degradation of silicone rubber

2001 ◽  
Vol 8 (6) ◽  
pp. 1108-1115 ◽  
Author(s):  
Jeong-Ho Kim ◽  
Woo-Chang Song ◽  
Jae-Hyung Lee ◽  
Yong-Kwan Park ◽  
Han-Goo Cho ◽  
...  
Keyword(s):  
Leakage Current ◽  
Silicone Rubber ◽  
Current Monitoring

scholarly journals Insulator string leakage current-monitoring sensor based on fiber Bragg grating

2018 ◽  
Vol 26 (19) ◽  
pp. 24940 ◽  
Author(s):  
Zhehao Yan ◽  
Zhiguo Zhang ◽  
Luming Li ◽  
Tong Zhai ◽  
Renzhong Guo ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Leakage Current ◽  
Bragg Grating ◽  
Current Monitoring

Leakage Current Monitoring for Electrical Loads Based on Internet of Things

2021 ◽  
Author(s):  
Riky Tri Yunardi ◽  
Erwin Sutanto ◽  
Aji Akbar Firdaus ◽  
Elsyea Adia Tunggadewi ◽  
Hammam Abror Ali ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Leakage Current ◽  
Electrical Loads ◽  
Current Monitoring

scholarly journals Effect of Ageing on the Tracking Characteristics of High-Temperature Vulcanized Silicone Rubber Hybrid Composites for High Voltage Insulation

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2242 ◽  
Author(s):  
Mohamed Ghouse Shaik ◽  
Vijayarekha Karuppaiyan
Keyword(s):  
Leakage Current ◽  
Silicone Rubber ◽  
Hybrid Composites ◽  
Electric Power System ◽  
Weight Percentage ◽  
Early Failures ◽  
High Voltage Insulation ◽  
Overall Performance ◽  
Current Characteristics ◽  
Structure Investigations

Micro-sized aluminum trihydrate (ATH) filled silicone rubber is useful as insulation in the electric power system. The addition of nanofillers can improve further, its overall performance. However, the degradation of such silicone insulator due to ageing has not yet been thoroughly analysed. Motivated by this, an investigation was done to observe the effect of ageing on the tracking, and the material characteristics of SiO2 nanofillers added micro-sized ATH-filled Silicone rubber. For this, the samples were prepared using different weight percentage of SiO2 nanofillers and were thermally-aged and water-aged in the laboratory environment. A well-regulated tracking-test setup was assembled, and the leakage current characteristics of the fresh, thermal-aged and water-aged samples were observed, as per international electro technical commission standard (IEC) 60,587. After tracking, the surface morphology of these samples was studied using scanning electron microscopy (SEM). Further, energy dispersive X-ray analysis (EDAX) was carried out to observe the elements present at the surface and, Fourier transform infra-red (FTIR) spectroscopy was conducted to study the changes in the chemical structure. Investigations through the leakage current, SEM, EDAX and FTIR revealed that the addition of nanofillers improved the tracking characteristics of the aged hybrid composite insulation samples, thereby minimising any early failures.

scholarly journals Effect of Filler Concentration on Tracking Resistance of ATH-Filled Silicone Rubber Nanocomposites

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2401 ◽  
Author(s):  
Youngtaek Jeon ◽  
Shin-Ki Hong ◽  
Myungchin Kim
Keyword(s):  
Leakage Current ◽  
Silicone Rubber ◽  
Thermo Gravimetric Analysis ◽  
Polymeric Materials ◽  
Filler Loading ◽  
Filler Concentration ◽  
Gravimetric Analysis ◽  
Surface Contact Angle ◽  
Current Characteristics ◽  
Surface Leakage

It is necessary for polymeric materials to have superior tracking resistance against various stress conditions for outdoor applications. In this study, the effect of nano-sized alumina tri-hydrate (ATH) particles on the tracking resistance of silicone rubber (SiR) is studied. Specimens with filler loadings of 1, 3, 5, 10, and 20 wt % are used for performance characterization. From the inclined plane test (IPT) results, apparent improvement in tracking resistance was achieved by mixing 3 wt % of nano-sized fillers, compared to unfilled specimens. ATH/SiR nanocomposites with 5 wt % loading showed comparable tracking performance to SiO2/SiR microcomposites with 20 wt % loading. For detailed analysis, measurements of surface contact angle (SCA) and surface leakage current, and thermo-gravimetric analysis (TGA) were performed. As the nano-ATH filler concentration increased, both thermal stability and leakage current characteristics were improved. Such results agreed with the tracking resistance performance by showing that thermal decomposition and surface charge transport is inhibited in ATH/SiR nanocomposites. Furthermore, performance improvement in nanocomposites was achieved, even at low filler loadings, compared to microcomposites. Meanwhile, the change in SCA was found to be rather limited, regardless of filler loading and filler size.

Long term accelerated aging investigation of an epoxy/silica nanocomposite for high voltage insulation

2018 ◽  
Vol 38 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Abraiz Khattak ◽  
Muhammad Amin ◽  
Muhammad Iqbal
Keyword(s):  
Leakage Current ◽  
Accelerated Aging ◽  
Sem Analysis ◽  
Epoxy Nanocomposite ◽  
Aging Period ◽  
High Voltage Insulation ◽  
Micro Level ◽  
Silica Nanocomposite ◽  
Current Monitoring

AbstractAn epoxy/silica nanocomposite loading was subjected to a multistress environment along with neat epoxy (NEP) in a specially fabricated chamber at 2.5 kV for 9000 h. For aging investigation of the samples, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), leakage current monitoring and Swedish Transmission Research Institute hydrophobicity classification were used with constant visual inspection. Both samples were found to be adequate and suitable for insulation at the end of the aging period. However, the epoxy nanocomposite (EPNC) performed better in comparison to NEP. FTIR spectrographs showed that a reduction in important hydrocarbon groups was less in the EPNC. The leakage current was higher in the case of the neat sample and accompanied by a higher loss of hydrophobicity. Similarly, in the nanocomposite, no significant change in surface topography at micro level was recorded from the SEM analysis.

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